| General > General Technical Chat |
| Don't forget to check those thermostat batteries! |
| (1/3) > >> |
| Smoky:
I checked over an HVAC system today that hadn't been serviced in a while. The batteries in the thermostat were shot! It's good practice to replace those batteries every year :-+ Merry Christmas! |
| wraper:
Good practice is to not use alkalines whenever possible. |
| NiHaoMike:
I think the main design flaw is requiring batteries in the first place. A supercap can easily keep the RTC running for days without external power and the settings can easily be backed up to EEPROM. |
| IdahoMan:
--- Quote from: NiHaoMike on December 23, 2022, 06:26:13 pm ---I think the main design flaw is requiring batteries in the first place. A supercap can easily keep the RTC running for days without external power and the settings can easily be backed up to EEPROM. --- End quote --- Yes. And it's not a flaw, it's a feature. ::) |
| Smoky:
These Honeywell thermostats will show a "Replace Battery" message when the batteries go low in voltage but the leaking batteries in the picture still measure 1.48v :scared: ...most people wait until they're told to do something ;) |
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